CVE-2021-31955mediumunder attackCWE-497

CVE-2021-31955: medium-severity vulnerability in Microsoft Windows 10 Version 1809

Windows Kernel Information Disclosure Vulnerability

Published · Updated

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85Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 5.5epss 81%
from disclosure to weapon18 days
Published on NVDJun 8
1st PoC+18d
CISA KEV+148d
Action required by CISAfederal deadline: 2021-11-17

Apply updates per vendor instructions.

In short

A flaw in Windows Kernel allows unauthorized access to sensitive system memory information. An attacker with local access can read kernel data that should be protected, potentially exposing system details.

Technical detail

CWE-497 information exposure vulnerability in Windows Kernel allows local unprivileged processes to read kernel memory regions through a side-channel or improper access control mechanism. Requires local code execution; impacts confidentiality of kernel data structures and system configuration.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Windows Kernel Information Disclosure Vulnerability
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.